As a karate-ka myself this manga is very pleasing to read and to experience. They actually use technical names of the martial art and are very faithful to the history and different styles in Karate. The Characters are interesting and make you more involved in the plot. The art is amazing too! There is a lot of blood and violence, which is fine, since the manga is about people fighting... About the sexual references... There are a few panty shots here and there, but the genre is corresponding to the rating. It is meant to be for mature audience. Well, having all this said... I recommend!